Section IV. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS AND AUXILIARIES

TM 10-3930-694-35

The only component requiring suppression is the electric

2-12. Interference Suppression Components

horn. This suppression component is mounted adjacent

to the brake master cylinder (fig. 2-7).

All electrical contractors are located in a heavy steel

enclosure which provides effective shielding against

2-13. Replacement of Suppression Components

electromagnetic radiation. The electric motors (travel

motor and pump motor) are spark enclosed types-the

Reinstall and reconnect

component

reversing

enclosure providing effective electromagnetic radiation

removal procedure.

shielding. Other switches which open and close at

frequent intervals are enclosed behind steel covers.

Section IV. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS AND AUXILIARIES

2-14. General

(2) Secure hoist cylinder to base with two

This section contains detailed instructions for removal

self-locking nuts and flatwashers.

and installation of assemblies and auxiliaries within the

(3) Secure hoist cylinder to crosshead with

fork lift truck.

Each major assembly is covered

two screws, lockwashers, and flatwashers.

individually, with its component subassemblies, as a

(4) Remove protection covers from hoist

related series of instructions.

In many cases a

cylinder fitting and hose, and connect hose securely to

subassembly can be removed without removing or

fitting.

dismantling the major assembly. In this case, select

(5) Place load backrest in position on

only the applicable steps from the complete instructions

carriage.

for servicing the next higher assembly. Always tag or in

(6) Operate hoist and tilt controls to purge air

some other manner identify such parts as horses and

from hydraulic system.

wiring leads to facilitate reassembly. When possible,

replace attaching parts such as nuts, bolts, flatwashers,

2-16. Mast

lockwashers and clamps on the part they attach. This

should prevent loss or misplacement.

Removal. Removal of the complete mast is

required when removing the drive axle. In most cases

Warning

the mast can be maintained by removal and

Disconnect

battery

charging

replacement of its individual components. Remove

connector by releasing arm clamp

complete mast as follows:

and pulling receptacle off before

(1) Slide backrest from carriage and lift from

performing

any

maintenance

truck. Remove forks from truck.

operations, except when battery

(2) Attach a hoist to assembly (or use the

power is required to support

forks of another fork lift truck), and relieve the weight of

maintenance functions performed on

the assembly on its supporting parts. Arrange to brace

installed equipment.

the mast against tipping as disconnections are made.

(3) Disconnect hose at hoist cylinder fitting

2-15. Hoist Cylinder

(fig. 2-8) and plug hose to prevent entrance of dirt.

a. Removal.

(4) Disconnect headlight at uprights (TM 10-

(1) Fully lower upright assembly (fig. 2-8).

3930-609-12).

(2) Remove load backrest from carriage (TM

(5) Disconnect both tilt cylinders at uprights

10-3930-609-12).

by removing pivot pins and attaching screws (TM 10-

3930-609-12).

(3) Disconnect, and plug hose at hoist

cylinder fitting to prevent entrance of dirt.

(6) Remove bearing caps (fig. 2-8) holding

mast to axle each attached with two screws and

(4) Remove two screws, lockwashers, and

lockwashers. Hoist mast from truck and lay it on floor

flatwashers, securing hoist cylinder to crosshead.

for disassembly.

(5) Remove two self-locking nuts and

b. Installation.

flatwashers securing hoist cylinder to base of uprights

and slide hoist cylinder from uprights.

(1) Position mast on bearing area of drive

axle and secure with bearing caps, lockwashers and

b. Installation.

screws.

(1) Place hoist cylinder in position on uprights

(2) Connect tilt cylinders to mast (TM 10-

with studs in hoist cylinder base engaging slots on hoist

3930-609-12).

cylinder.

2-12